PPRuNe Forums - Underwing Sight Gauge for Fuel quantity indication

PPRuNe Forums (https://www.pprune.org/)

- Engineers & Technicians (https://www.pprune.org/engineers-technicians-22/)

- - Underwing Sight Gauge for Fuel quantity indication (https://www.pprune.org/engineers-technicians/623852-underwing-sight-gauge-fuel-quantity-indication.html)

Danial9874

24th Jul 2019 05:30

Underwing Sight Gauge for Fuel quantity indication

Hi guys
do you guys heard about underwing sight gage before
how does it operate?

NutLoose

24th Jul 2019 11:06

Stearman has one, the glass tube has an indicator in it, above in the tank it has a float attached to the indicator, as the level drops the float drops and the quantitiy indicator also drops, picture here

http://www.yesteryearaviation.com/Now%20In%20Stock.pdf

Sevarg

26th Jul 2019 11:00

Going back a day or two. The drip-stick on the Brits. Pull it out and when fuel came out read the level off the stick. Never a problem.

WOTME?

30th Jul 2019 11:18

Quote:

Originally Posted by Sevarg (Post 10528775)

Going back a day or two. The drip-stick on the Brits. Pull it out and when fuel came out read the level off the stick. Never a problem.

BAC 1-11's had them,146/RJ still has.If I remember correctly you need to use a table with the reading to get an accurate measurement.

dixi188

30th Jul 2019 12:36

The L188 Electra had drip sticks like the Viscount and Brit.
Then we got an Electra with sight sticks. You had to look up at the lower end of the stick and it was dark when the top was covered by the fuel and light when uncovered. The only problem was if the seal around the stick leaked you got a drip of fuel in the eye.
Is this the sort of sight gauge you are looking for?

NutLoose

31st Jul 2019 23:07

Vc10's were MLI sticks. Ahhhh the fun and games, flight planning computer gives them the fuel load then the flight eng asks you on the side for an extra couple of K and lose it, then so does the pilot. With judicious transferring you could lose it in the galleries and up the fin without it indicating on the gauges, the eng would then select the supposedly indicating empty fin and empty it in flight.

slacktide

2nd Aug 2019 20:58

Boeing uses underwing float sticks on most models (excluding out-of-production with dripsticks, and 787, which does not have a mechanical fuel indication system. Don't know about 777x). The work and look like as shown below. If you Google for "fuel measuring stick manual" you might find something interesting to read.

https://en.wikipedia.org/wiki/Floatstick

Fuel Floatstick/Dripstick

All times are GMT. The time now is 19:19.